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Finding the Fourth Proportional to 111,647.52, 154,073.52 and 61,346.48

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Solution

The fourth proportional to 111,647.52, 154,073.52 and 61,346.48 is: 84,658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,647.52 : 154,073.52 = 61,346.48 : x
  2. Step 2: Convert to fraction form
    111,647.52/154,073.52 = 61,346.48/x
  3. Step 3: Cross multiply
    111,647.52x = 154,073.52 × 61,346.48
  4. Step 4: Simplify right side
    111,647.52x = 9,451,868,113.21
  5. Step 5: Solve for x
    x = 9,451,868,113.21/111,647.52
  6. Step 6: Final answer
    x = 84,658.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.